Portable, rechargeable storage battery



FIG. 1 is a side elevational view of a portable, rechargeable storage battery showing my new design, the opposite side elevational view being a mirror image;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a portable, rechargeable storage battery, as shown and described. 